If you are having any CRYENGINE 5 Launcher, Sandbox Editor and Engine related issues, please try the following steps :

When having issues with the new Launcher, try the following :- Uninstall the new Launcher and entire Engine.- Remove C:\Users\YourUsername\AppData\Local\CryEngine_Launcher folder.- Remove HKEY_CURRENT_USERS\SOFTWARE\Crytek Windows Registry Key.- Be sure the Launcher is not running in the background.- Allow Launcher and Engine executables on the firewall.- Whitelist Launcher and Engine in your antivirus software.

Check guide before running Sandbox Editor :- Sandbox Editor and the Game Executable requires a DX11 card as minimum. No support for DX9 or DX10.- Increase your Windows Virtual Memory.- Check if you have installed Microsoft VC++ 2015 Redistributable.- Reinstall the new Launcher and entire Engine.

Start the Launcher and re-run the Sandbox Editor.

Crash on Loading Plugins in Sandbox Editor startup (related to 5.0 only!) :- If you are using a custom Windows theme, switch back to default theme.

Launcher : Installation failed during downloading of engine :- The Launcher needs to be whitelisted in the Antivirus exception list for downloading to work properly.